20 research outputs found

    Southern Saami Language and Culture—Between Stigma and Pride, Tradition and Modernity

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    In this chapter, I will present an analysis of how a Southern Sámi identity is performed in our late modern society, first and foremost how this identity is expressed through the use—or omittance—of the Southern Sámi language. It has been pointed out that it is more or less a miracle that Southern Sámi is still a living language. In my chapter, I will try to demonstrate how some sociocultural and political factors through history have inhibited the use of this language, while other factors have supported—directly or indirectly—the transmission of this linguistic repertoire from one generation to another. The master story of the Southern Sámi language and culture is intimately connected to the general ‘climate of opinion’ when it comes to minority–majority relations in Norway. The position of the Sámi population today has in several ways been fundamentally changed, compared with how the Sámi were regarded by the Norwegian majority population well into the twentieth century, as a lesser and inferior people. Some of the main aspects of my analysis will be related to contrasts like stigma versus pride, tradition versus modernity—as these values are attached to the Sámi culture

    The relationship between rifting and magmatism in the northeastern Arabian Sea

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    The causal mechanisms linking continental flood basalts, lithospheric extension and mantle plumes, as well as the relative timing of extension and volcanism, are controversial1, 2, 3, 4. The eruption of the Deccan flood basalts was approximately contemporaneous with the separation of the Seychelles microcontinent from India. However, between these continental blocks lies the enigmatic Laxmi Ridge, and the sequence of extensional events that formed these various tectonic elements is poorly understood. Here we present wide-angle seismic data along a profile across Laxmi Ridge that permit delineation of offshore igneous bodies associated with the Deccan magmatism; these bodies are similar to those associated with flood-basalt volcanism and rifting in the Atlantic region and elsewhere1. From the geometry of these bodies, we infer that there were two periods of extension. The first phase, which involved extension between Laxmi Ridge and the Indian subcontinent, was accompanied by significant Deccan-related magmatism. Full development of a continental margin was achieved during the second phase of weakly magmatic extension between Laxmi Ridge and the Seychelles. We suggest that between these rifting events the region passed beyond the reach of lateral flow from the source region of the Deccan flood basalts

    A catalogue of deep mantle plumes: New results from finite-frequency tomography

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    Geochemistry, Geophysics, Geosystems, v. 7, p. Q11007, 2006. http://dx.doi.org/10.1029/2006GC001248International audienceNew finite-frequency tomographic images of S-wave velocity confirm the existence of deep mantle plumes below a large number of known hot spots. We compare S-anomaly images with an updated P-anomaly model. Deep mantle plumes are present beneath Ascension, Azores, Canary, Cape Verde, Cook Island, Crozet, Easter, Kerguelen, Hawaii, Samoa, and Tahiti. Afar, Atlantic Ridge, Bouvet(Shona), Cocos/Keeling, Louisville, and Reunion are shown to originate at least below the upper mantle if not much deeper. Plumes that reach only to midmantle are present beneath Bowie, Hainan, Eastern Australia, and Juan Fernandez; these plumes may have tails too thin to observe in the lowermost mantle, but the images are also consistent with an interpretation as “dying plumes” that have exhausted their source region. In the tomographic images, only the Eifel and Seychelles plumes are unambiguously confined to the upper mantle. Starting plumes are visible in the lowermost mantle beneath South of Java, East of Solomon, and in the Coral Sea. All imaged plumes are wide and fail to show plumeheads, suggesting a very weakly temperature-dependent viscosity for lower mantle minerals, and/or compositional variations. The S-wave velocity images show several minor differences with respect to the earlier P-wave results, including plume conduits that extend down to the core-mantle boundary beneath Cape Verde, Cook Island, and Kerguelen. A more substantial disagreement between P-wave and S-wave images reopens the question on the depth extent of the Iceland plume. We suggest that a pulsating behavior of the plume may explain the shape of the conduit beneath Iceland
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